实验七 记两个Ogre中的小工具

这几天整一个地形编辑器，越想越美，想了太多功能，结果自然是把自己弄的焦头烂额。。。还好目前似乎拔出几根线头，一切正在朝好的方向前进！yeah！

静下来，好好整理一下收获，顺手先记两个Ogre中的小工具，热手：

1,

将数字转换为String：

StringConverter::toString( StaticEntityIndex++ ), sValue );

(很sb地干了件事，自己去写这个类，到头来才晕晕乎乎地想起那里见过，Orz。。。)

2，

将任意Texture保存为图片：

盗来的，哼哼~~~

稍微完善下吧，注意加上

Lib：

RenderSystem_Direct3D9_d.lib d3dx9.lib d3d9.lib

Include：（如果编译器说找不到，自己手动到Ogre目录下拷过去）

#include <OgreD3D9Texture.h>
#include <OgreD3D9Mappings.h>

详细代码如下：

bool _saveTextureToLocal(Ogre::TexturePtr texPtr, const Ogre::String& fileName) 
  { 
      Ogre::HardwarePixelBufferSharedPtr tmpTexBuf = texPtr->getBuffer(); 
      int width = texPtr->getWidth(); 
      int height= texPtr->getHeight(); 

      char* tmpBuf = new char[width*height*4]; 
      Ogre::PixelBox tmpBox(width, 
          height, 
          texPtr->getDepth(), 
          texPtr->getFormat(), 
          tmpBuf); 
      tmpTexBuf->blitToMemory(tmpBox); 

      TexturePtr tmpTexPtr = TextureManager::getSingleton().createManual ( fileName, "General", 
          TEX_TYPE_2D, texPtr->getWidth(), texPtr->getHeight(), 1, 0, PF_A8B8G8R8 ); 
      tmpTexPtr->load(); 

      HRESULT hr; 
      IDirect3DSurface9 *pDstSurface = 0; 
      Ogre::D3D9Texture *d3dTex = reinterpret_cast< D3D9Texture * >(tmpTexPtr.get()); 
      RECT dstRC = {0, 0, d3dTex->getWidth(), d3dTex->getHeight()}; 

      if( FAILED( hr = d3dTex->getNormTexture()->GetSurfaceLevel(0, &pDstSurface) ) ) 
      { 
          return false; 
      } 

      size_t rowWidth; 
      if (PixelUtil::isCompressed(tmpBox.format)) 
      { 
          // D3D wants the width of one row of cells in bytes 
          if (tmpBox.format == PF_DXT1) 
          { 
              // 64 bits (8 bytes) per 4x4 block 
              rowWidth = (tmpBox.rowPitch / 4) * 8; 
          } 
          else 
          { 
              // 128 bits (16 bytes) per 4x4 block 
              rowWidth = (tmpBox.rowPitch / 4) * 16; 
          } 
      } 
      else 
      { 
          rowWidth = tmpBox.rowPitch * PixelUtil::getNumElemBytes(tmpBox.format); 
      } 

      if( FAILED( hr = D3DXLoadSurfaceFromMemory( 
          pDstSurface, NULL, &dstRC, tmpBox.data, 
          Ogre::D3D9Mappings::_getPF( tmpBox.format), 
          rowWidth, 0, 
          &dstRC, D3DX_FILTER_TRIANGLE | D3DX_FILTER_DITHER, 0)) ) 
      { 
          SAFE_RELEASE(pDstSurface); 
          return false; 
      } 

      Ogre::HardwarePixelBufferSharedPtr tmpDesTexBuf = tmpTexPtr->getBuffer(); 
      char* tmpDesBuf = new char[width*height*4]; 
      Ogre::PixelBox tmpDesBox(width, 
          height, 
          tmpTexPtr->getDepth(), 
          tmpTexPtr->getFormat(), 
          tmpDesBuf); 
      tmpDesTexBuf->blitToMemory(tmpDesBox); 
      Ogre::Image image; 
      image.loadDynamicImage((Ogre::uchar*)tmpDesBox.data, tmpDesBox.getWidth(), tmpDesBox.getHeight(), tmpDesBox.format); 
      image.save(fileName); 

      delete [] tmpDesBuf; 
      delete [] tmpBuf; 

      tmpTexPtr.setNull(); 

      return true; 
  }

保存文件名的时候注意，要加上后缀，支持相当广泛

比如

_saveTextureToLocal(layer0,"First.dds");

感谢万能的开源组织吧！